232 HI I.I-ETIN 82, UNITED STATES NATIONAL MUSE I U 



i 1 . Longest cirri with more than 10 segments, the outer with sharp dorsal spines; 

 smaller, the arms up to 110 mm. in length (Maldive Islands and Ceylon and 

 western and northern coasts of Bay of Bengal as far as Akyab, Burma; 



0-62 [?69] meters) reynaudi (p. 302) 



i'. Longest cirri with less than 40 segments, the outer with dorsal tubercles or 



broad and usually blunt spines; larger, the arms 145-180 mm. long. 



j'. Brachials not excessively short, beyond the proximal fourth of the arms 



3-4 times as broad as long; cirri stouter, the segments subequal, all 



markedly broader than long; dorsal surface of the ossicles of the division 



series and the brachials not conspicuously swollen (Kei Islands, Amboina 



and Singapore to Ceylon; 0-50 meters) amboinae (p. 297) 



j 1 . Brachials exceedingly short and discoidal, beyond the proximal fourth of the 



arms 6-8 times as broad as long with almost or quite parallel ends; cirri 



more slender, with 30-33 segments, the earlier segments nearly as long as 



broad. 



k l . Dorsal surface of the ossicles of the division series, and of the brachials 



to near the arm tips, swollen; profile of the proximal portion of the arms 



6trongly and roundedly serrate, the serrations pointing distally; 



carination of the basal segments of the earlier pinnules very slight, 



almost vestigial; 19 arms 145 mm. long (Amboina; about 2 



meters) -- sarae (p. 318) 



h*. Dorsal surface of the ossicles of the division series and brachials not 

 swollen; profile of the proximal portion of the arms angularly serrate, 

 the serrations pointing proximally; dorsal profile of arms beyond the 

 proximal third smooth; carination of the basal segments of the earlier 

 pinnules conspicuous, though not exaggerated; 10-16 arms 100-150 



mm. long (Philippines; 38-44 meters) parilis (p. 319) 



h 1 . P 3 much smaller than P 2 . 



i l . Cirri with 32-36 segments; 14 arms about 160 mm. long; P 3 with 30 segments 



(Red Sea) ater (p. 311) 



j?. Cirri with 39-43 segments; 20 arms 80 mm. long; P 3 with 21 segments (Zanzi- 

 bar) joubini (p. 312) 



g 2 . Cirri with the longest segments longer than, or at least as long as, broad. 

 h l . Longest cirri with 36-39 segments. 



('. Outer cirrus segments only slightly broader than long; P 2 only very slightly 

 longer than P] and resembling it, but with .a few less (25) segments which 

 become more elongate distally; Pj the largest and longest pinnule, slightly 

 stouter throughout than Pj, with 22 segments; 24 arms about 85 mm. long 



(Burma eastward to Philippines; 27-73 [?89] meters) pulchra (p. 287) 



j 5 . Outer cirrus segments about twice as broad as long; Pj half again as long as 

 Pi, slender and flagellate distally, with 24 segments; Pj slightly smaller than 

 Pi, but much larger than Pi ; 19 arms 80 mm. long (Zanzibar) .gravieri (p. 289) 

 /i'. Longest cirri with 31-36 segments. 



i 1 . Outer cirrus segments from half again to twice as broad as long; P, and P a 

 similar and of the same length, 13 mm. long with 26 segments; P 3 shorter, 

 9 mm. long with 19 segments; 16-25 arms 110 mm. long (Pedro shoal, off 



the west coast of India) compta (p. 293) 



t 1 . Outer cirrus segments scarcely broader than long; P! 10 mm. long with 26-28 

 segments; Pj longer, 12 mm. long with 27 segments, and somewhat stouter; 

 Pi similar to P 3 but very slightly larger and longer; 13-18 arms 65-130 

 mm. long (Madagascar) ruadagascarenais (p. 295) 



